Host an Event Volunteer Join Tickets

Suppport the plant database you love!


Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

Enter a Plant Name:
Or choose a plant family:
Prenanthes altissima (Tall rattlesnakeroot)
Cressler, Alan

Prenanthes altissima

Prenanthes altissima L.

Tall Rattlesnakeroot, Tall White Lettuce

Asteraceae (Aster Family)

Synonym(s): Nabalus altissimus, Prenanthes altissima var. cinnamomea

USDA Symbol: pral3

USDA Native Status: L48 (N), CAN (N)

Tall White Lettuce (Prenanthes altissima) has only 5 main bracts surrounding the flower heads.


From the Image Gallery

20 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb

Bloom Information

Bloom Color: Yellow , Green
Bloom Time: Aug , Sep , Oct , Nov


USA: AL , AR , CT , DE , GA , IL , IN , KY , LA , MA , MD , ME , MI , MO , MS , NC , NH , NJ , NY , OH , OK , PA , RI , SC , TN , TX , VA , VT , WV
Canada: MB , NB , NS , ON , PE , QC


Conspicuous Flowers: yes

National Wetland Indicator Status

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Additional resources

USDA: Find Prenanthes altissima in USDA Plants
FNA: Find Prenanthes altissima in the Flora of North America (if available)
Google: Search Google for Prenanthes altissima


Record Modified: 2015-06-04
Research By: TWC Staff

Go back